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Finding the Fourth Proportional to 76,658.95, 105,789.19 and 43,124.95

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Solution

The fourth proportional to 76,658.95, 105,789.19 and 43,124.95 is: 59,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,658.95 : 105,789.19 = 43,124.95 : x
  2. Step 2: Convert to fraction form
    76,658.95/105,789.19 = 43,124.95/x
  3. Step 3: Cross multiply
    76,658.95x = 105,789.19 × 43,124.95
  4. Step 4: Simplify right side
    76,658.95x = 4,562,153,529.29
  5. Step 5: Solve for x
    x = 4,562,153,529.29/76,658.95
  6. Step 6: Final answer
    x = 59,512.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.